Topical Questions These questions are keyed to the major topics in the chapter. Usually...

Topical Questions

These questions are keyed to the major topics in the chapter. Usually a question that is answered at the back of this book is paired with a similar one that is not.

In an automobile catalytic converter the catalysis is accomplished on a surface consisting of platinum and other precious metals. The metals are deposited as a thin layer on a honeycomb-like ceramic support (see the photo).

(a) Why is the ceramic support arranged in the honeycomb geometry?

(b) Why are the metals deposited on the ceramic surface instead of being used as strips or rods?